The Marantz NR1711 is a slim 7.2-channel AV receiver with HDMI 8K support, Dolby Atmos, and eARC for better TV audio.
If you are getting the Marantz NR1711 eARC no sound problem, the cause is often a settings mismatch, an HDMI handshake issue, or a TV output configuration that blocks audio from reaching the receiver.
This guide explains the most common reasons the issue appears and how to isolate the exact fault without guessing.
You will also see how eARC, ARC, HDMI CEC, and TV audio menus work together so you can restore sound faster.
What eARC does on the Marantz NR1711
eARC, or enhanced Audio Return Channel, sends audio from a TV back to the receiver over the HDMI cable.
On the Marantz NR1711, this is especially useful for built-in TV apps such as Netflix, Disney+, Apple TV+, and Prime Video, because the TV can pass higher-bandwidth audio formats to the receiver.
Compared with standard ARC, eARC supports more advanced formats and more reliable synchronization.
It also depends on both devices correctly negotiating the connection, which is why a small setting change can silence the entire audio path.
Most common reasons for Marantz NR1711 eARC no sound
When the receiver shows no sound from the TV, the problem usually falls into one of a few categories:
- eARC or ARC is disabled on the Marantz NR1711 or the TV
- HDMI Control or CEC is turned off, breaking the return audio link
- The TV is set to internal speakers instead of HDMI eARC output
- The HDMI cable is not rated properly or has a bad connection
- The selected app or format is outputting unsupported audio
- The receiver input or speaker mode is configured incorrectly
- A firmware or handshake glitch is preventing audio detection
These causes are common across brands like LG, Samsung, Sony, Panasonic, TCL, and Hisense TVs, but the exact menu names may differ slightly.
Check the HDMI port and cable first
Start with the physical connection because eARC relies entirely on a working HDMI link.
The Marantz NR1711 should be connected to the TV’s HDMI port labeled eARC or ARC, not a random HDMI input.
On many TVs, only one port supports return audio.
Use a certified High Speed HDMI cable or an Ultra High Speed HDMI cable if your setup also handles 4K HDR or 8K video.
A damaged cable can still carry video while failing to pass stable return audio.
If possible, test with a shorter cable and reseat both ends firmly.
Quick cable checklist
- Use the TV’s labeled eARC/ARC HDMI port
- Confirm the receiver’s HDMI Monitor Out is connected to that port
- Try a different HDMI cable if audio is intermittent
- Avoid HDMI switches or splitters during troubleshooting
Verify HDMI Control and eARC settings on the NR1711
For eARC to work on the Marantz NR1711, HDMI Control must usually be enabled.
In Marantz terminology, this feature often works alongside CEC, the device-control protocol that allows the TV and receiver to communicate.
If HDMI Control is off, the return audio channel may never activate.
Check the receiver settings menu and confirm the following are enabled when using TV apps:
- HDMI Control: On
- ARC: On, if present as a separate option
- eARC: Auto or On
- TV Audio switching: enabled if available
If you changed any of these settings, power-cycle the receiver after saving.
Some HDMI handshakes only update after both devices restart.
Set the TV audio output correctly
The TV is often the real source of the problem, especially when its audio output is still set to internal speakers.
Even if the Marantz NR1711 is connected correctly, the TV may continue to route sound away from the receiver until its audio menu is changed.
Look for settings such as:
- Sound Output: HDMI ARC, HDMI eARC, or Receiver
- TV Speakers: Off
- Digital Audio Output: Auto, Pass Through, or Bitstream
- eARC Mode: Auto or On
On some TVs, PCM output can cause limited compatibility with surround formats, while Pass Through or Auto gives the receiver more control over decoding.
If you are troubleshooting no sound at all, try Auto first, then test PCM if the TV menu exposes it.
Why HDMI CEC matters for eARC
eARC generally depends on HDMI CEC for device discovery and control signaling.
Different manufacturers label CEC differently: LG uses Simplink, Samsung uses Anynet+, Sony uses Bravia Sync, and Panasonic often uses VIERA Link.
If CEC is off, the TV and receiver may fail to recognize each other even if the cable is fine.
Make sure CEC is enabled on both devices.
If you have multiple HDMI devices, only one conflicting box or streamer can interfere with the chain, so it can help to disconnect everything except the TV and Marantz NR1711 during testing.
Test with built-in TV apps before blaming the receiver
To isolate the problem, use a built-in streaming app on the TV instead of an external device.
If a TV app produces sound through the Marantz NR1711, the eARC path is working and the issue may be with your HDMI source device.
If no app produces sound, the problem is likely in the TV or receiver settings.
This test matters because external sources such as Apple TV, Roku, Fire TV Stick, Xbox Series X, or PlayStation 5 can send audio directly to the receiver instead of using eARC.
Those devices use a different signal path and can hide the real cause of the issue.
Check the Marantz input and sound mode
On the NR1711, make sure you are monitoring the correct source.
When eARC works properly, the receiver usually switches to TV Audio or the designated ARC input automatically.
If you manually selected another input, sound may be routed somewhere else.
Also verify the sound mode.
If the receiver is set to a mode that mutes certain channels or expects a specific incoming format, you may hear nothing or only partial audio.
For testing, choose a straightforward mode such as Auto or Direct to rule out processing errors.
Useful receiver checks
- Confirm TV Audio is selected
- Try Auto sound mode for basic decoding
- Turn off zone output or special listening modes during testing
- Check the mute icon and volume level on the front panel
Update firmware on both devices
HDMI handshakes can fail because of software bugs rather than hardware faults.
Marantz periodically releases firmware updates that improve HDMI compatibility, and TV manufacturers also patch ARC and eARC behavior through updates.
If your Marantz NR1711 eARC no sound issue started after a TV update or new device installation, firmware is worth checking immediately.
Update the receiver through its network settings or USB method if needed, then update the TV through its system menu.
After both updates, unplug the TV and receiver from power for about a minute before testing again.
This clears cached HDMI negotiation data on many systems.
Reset the connection path without factory resetting everything
Before doing a full factory reset, try a controlled reconnection process.
This often fixes persistent no-sound problems after a settings change.
- Turn off the TV and Marantz NR1711
- Unplug both devices from power for 60 seconds
- Disconnect all HDMI sources except the TV and receiver link
- Reconnect the HDMI cable to the proper eARC/ARC ports
- Turn on the TV first, then the receiver
- Re-enable HDMI Control and eARC if needed
This sequence forces a fresh handshake and helps the devices rebuild their control relationship from scratch.
When the problem is the source device instead of eARC
If the TV apps work but an external source does not, the issue may be audio format, HDMI output, or passthrough settings on the device itself.
Consoles and streamers often default to formats the TV or receiver is not expecting.
In that case, set the source device to automatic audio output and test with standard stereo or Dolby Digital before moving to advanced formats.
For example, a device outputting bitstream or multichannel PCM may behave differently depending on the TV model and firmware.
This is not a Marantz-specific fault, but it can look like one because the receiver is the final stop in the chain.
When to suspect hardware failure
Hardware failure is less common than a settings issue, but it can happen.
If the Marantz NR1711 never receives audio from any TV app, cable, or source after you verify settings and update firmware, the HDMI board or eARC circuitry may be faulty.
Likewise, a damaged TV HDMI port can block return audio while leaving other ports functional.
Signs that point toward hardware include:
- Audio drops out across multiple cables and TVs
- The eARC port never negotiates, even after resets
- HDMI Control works inconsistently across devices
- Video passes normally, but TV audio never reaches the receiver
At that stage, professional service or warranty support may be the most efficient next step.
Fast troubleshooting sequence
If you want the shortest path to a fix, use this order:
- Confirm the TV is connected to the eARC/ARC port
- Enable HDMI Control, ARC, and eARC on the NR1711
- Set the TV sound output to HDMI eARC or Receiver
- Turn on CEC on both devices
- Test a built-in TV app
- Swap the HDMI cable
- Update firmware on both devices
- Power-cycle both units and retest
Following this sequence solves many Marantz NR1711 eARC no sound cases because it checks the actual audio path in the same order the signal travels.